Nuclear medicine injection device

Abstract

The invention discloses a nuclear medicine injection device, including a syringe, a through hole is provided on the side wall of the syringe, a pipeline is fixedly connected to one side of the through hole, a first valve is arranged on the pipeline, a medicine storage cartridge is fixedly connected to one end of the pipeline, a second valve is arranged on the output end of the syringe, a fixed plate is threadedly sleeved on one end of the syringe, a guide rod is slidably penetrated on the fixed plate, a movable plate is fixedly connected to one end of the guide rod, a first through hole is provided on the surface of the movable plate, a turntable is rotatably connected to one side of the movable plate, a second through hole is provided on the surface of the turntable, and a spring is fixedly connected between the fixed plate and the movable plate. This scheme can realize the mixing of two or more liquid medicines in the same injection device. When the injection device is not in use, since the turntable and the movable plate are threadedly connected to one end of the syringe through the guide rod and the fixed plate, they are not easy to fall off even if they accidentally fall to the ground, thereby reducing the possibility of liquid medicine spilling from the syringe, which is beneficial to protecting the environment and the health of medical personnel.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a nuclear medicine injection device. Background Art

[0002] Nuclear medicine is an emerging discipline that uses nuclear technology to diagnose, treat and study diseases. It is one of the main means of modern medicine. The Department of Nuclear Medicine is also one of the main medical and technical departments of the hospital. It mainly carries out nuclear medicine examination projects and is one of the effective means to assist clinical departments in making correct diagnosis of diseases. It has a number of advanced equipment such as SPECT and thyroid function meters. It has a certain research role in the imaging diagnosis of thyroid diseases, tumors, coronary heart disease, kidney diseases, etc. and the treatment of hyperthyroidism and bone metastasis, and has achieved good medical and social benefits.

[0003] Although most of the drugs used in nuclear medicine are radioactive, the syringes and other injection devices used to inject nuclear medicine drugs are no different from those in other medical fields; nuclear medicine drugs often contain radiation or other components that are harmful to the human body, but existing injection devices often lack reliable protection measures. Although existing syringe needles are equipped with protective covers, they are generally not firm. If they are accidentally dropped on the ground, the protective covers may fall off, and the needles may be bent and damaged, causing the drugs to spill. This will not only have an adverse effect on the work of medical staff, but the drugs used in nuclear medicine may also pollute the environment and even endanger human health. When conducting nuclear medicine experiments, multiple drugs need to be mixed. The existing method is to use a syringe to inhale one drug and then inject it into the bottle of another drug for mixing. This drug mixing method is cumbersome and inefficient. Summary of the invention

[0004] The main purpose of the present application is to provide a nuclear medicine injection device to improve the problems in the related technology.

[0005] In order to achieve the above-mentioned purpose, the present application provides a nuclear medicine injection device, including a syringe, a side wall of the syringe is provided with a through hole, one side of the through hole is fixedly connected to a pipeline, a first valve is arranged on the pipeline, one end of the pipeline is fixedly connected to a drug storage cartridge, the drug storage cartridge is fixedly connected to the syringe, a second valve is arranged at the output end of the syringe, a fixed plate is threadedly sleeved at one end of the syringe, a guide rod is slidably penetrated through the fixed plate, one end of the guide rod is fixedly connected to a movable plate, the other end of the guide rod is fixedly connected to a limiting plate, one side of the limiting plate is fitted with the fixed plate, a first through hole is provided on the surface of the movable plate, the first through hole is opposite to the output end of the syringe, a turntable is rotatably connected to one side of the movable plate, the turntable and the movable plate are gap-matched, a second through hole is provided on the surface of the turntable, the second through hole is opposite to the first through hole, and a spring is fixedly welded between the fixed plate and the movable plate.

[0006] In one embodiment of the present invention, the syringe includes a needle, a needle tube, a first piston, a first pull rod and a first push plate, the needle is threadedly connected to the output end of the needle tube, the first piston slides along the inner side wall of the needle tube, one end of the first pull rod is fixedly connected to the first piston, and the other end of the first pull rod is fixedly connected to the first push plate.

[0007] In one embodiment of the present invention, one end of the needle tube is fixedly connected to a push block, the side wall of the push block is set as a rough surface, two push blocks are provided, and the two push blocks are symmetrical to each other.

[0008] In one embodiment of the present invention, the surface of the needle tube is provided with scale lines, and there are a plurality of scale lines, and the plurality of scale lines are equidistantly distributed.

[0009] In one embodiment of the present invention, the drug storage cartridge includes a cylinder, a second piston, a second pull rod and a second push plate, the cylinder is configured as a transparent cylinder, the cylinder is fixedly connected to the side wall of the syringe, the second piston slides along the inner side wall of the cylinder, one end of the second pull rod is fixedly connected to the second piston, and the other end of the second pull rod is fixedly connected to the second push plate.

[0010] In an embodiment of the present invention, the surface of the guide rod is set to be a smooth surface, four guide rods are provided, and the four guide rods are evenly distributed along the fixing plate.

[0011] In one embodiment of the present invention, the movable plate is configured as a circular movable plate, a circumferential side surface of the movable plate is provided with an outer protrusion, and a blind hole is opened on one side of the movable plate.

[0012] In one embodiment of the present invention, an L-shaped block is fixedly welded to one side of the turntable, and the L-shaped block slides along the outer protrusion.

[0013] In an embodiment of the present invention, a side wall of the turntable is provided with a protrusion, and the protrusion cooperates with the blind hole.

[0014] In one embodiment of the present invention, a sleeve is fixedly welded to one side of the second through hole, and the sleeve cooperates with the first through hole.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: when using the nuclear medicine injection device designed as above, first, pull the pull rod of the medicine storage cartridge outward to reserve space for the medicine storage cartridge, close the valve on the side wall of the syringe, and then manually twist the turntable to connect the through hole on the turntable with the through hole on the movable plate, then make the needle of the syringe face the opening of the medicine bottle containing the liquid medicine, push the syringe to make the needle of the syringe extend out of the two through holes and then extend into the medicine bottle, and then pull the pull rod of the syringe to take the medicine for the first time. After completing the first medicine taking, under the action of the spring on one side of the movable plate, the movable plate is reset, and the needle of the syringe no longer extends out of the turntable and the movable plate, and the turntable is manually twisted to make the through hole on the turntable no longer connected with the through hole on the movable plate, and then close the valve at the output end of the syringe, open the valve on the side wall of the syringe, push the push plate of the syringe, and let the pull rod of the syringe push the piston of the syringe to release the liquid medicine in the needle tube of the syringe through the through hole on the side wall of the syringe The liquid flows into the medicine storage cartridge through the through hole and pipeline, and then the valve on the side wall of the syringe is closed, and the valve at the output end of the syringe is opened. The above steps are repeated to extract the second liquid medicine from other medicine bottles. After completion, the valve at the output end of the syringe is closed, and the valve on the side wall of the syringe is opened to push the second liquid medicine into the medicine storage cartridge. The liquid medicines are then mixed by alternately pushing and pulling the two pull rods of the syringe and the medicine storage cartridge, thereby achieving the mixing of more than two liquid medicines in the same injection device. Finally, when the injection device is not in use, the turntable is manually twisted so that the through hole on the turntable is no longer connected to the through hole on the moving plate, so that the needle of the syringe cannot extend out of the turntable and the moving plate, thereby avoiding the needle of the syringe from hurting the human body. Since the turntable and the moving plate are threadedly connected to one side of the syringe through the guide rod and the fixed plate, they are not easy to fall off even if they accidentally fall to the ground, thereby reducing the possibility of liquid medicine spilling from the syringe, which is beneficial to protecting the environment and the health of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the main internal structure of the present invention when not in use;

[0018] Figure 3It is a schematic diagram of the main internal structure of the present invention when in use;

[0019] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at A;

[0020] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure at B;

[0021] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at C.

[0022] In the figure: 1, syringe; 2, through hole; 3, pipeline; 4, first valve; 5, medicine storage cartridge; 6, second valve; 7, fixed plate; 8, guide rod; 9, movable plate; 10, limit plate; 11, first through hole; 12, turntable; 13, second through hole; 14, spring; 101, needle; 102, needle tube; 103, first piston; 104, first pull rod; 105, first push plate; 106, push block; 107, scale line; 121, L-shaped block; 122, convex block; 131, sleeve; 501, cylinder; 502, second piston; 503, second pull rod; 504, second push plate; 901, convex part; 902, blind hole. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] Example 1

[0025] See also Figure 1-Figure 6The present invention provides a nuclear medicine injection device, including a syringe 1, the syringe 1 including a needle 101, a needle tube 102, a first piston 103, a first pull rod 104 and a first push plate 105, the needle 101 is threadedly connected to the output end of the needle tube 102, and is used to extract liquid medicine from a medicine bottle, the first piston 103 slides along the inner side wall of the needle tube 102, one end of the first pull rod 104 is fixedly connected to the first piston 103, and is used to push and pull the first piston 103, and the other end of the first pull rod 104 is fixedly connected to the first push plate 105 A fixed connection is provided to facilitate manual pushing and pulling of the first pull rod 104. One end of the needle tube 102 is fixedly connected with a push block 106. The side wall of the push block 106 is set as a rough surface. Two push blocks 106 are provided. The two push blocks 106 are symmetrical to each other and are used to cooperate in manually pushing and pulling the first pull rod 104. The surface of the needle tube 102 is provided with scale lines 107. There are several scale lines 107, and the several scale lines 107 are equidistantly distributed. Since the needle tube 102 is transparent, the scale lines 107 are convenient for observing the amount of liquid medicine in the needle tube 102.

[0026] A through hole 2 is provided on the side wall of the syringe 1, a pipe 3 is fixedly welded to one side of the through hole 2, a first valve 4 is provided on the pipe 3, one end of the pipe 3 is fixedly connected to a drug storage cartridge 5, and opening the first valve 4 can allow the drug liquid in the syringe 1 to flow into the drug storage cartridge 5 through the through hole 2 and the pipe 3, and the drug storage cartridge 5 is fixedly connected to the syringe 1.

[0027] The drug storage cylinder 5 includes a cylinder body 501, a second piston 502, a second pull rod 503 and a second push plate 504. The cylinder body 501 is set as a transparent cylinder body to facilitate observation of the drug storage situation in the cylinder body 501. The cylinder body 501 is fixedly connected to the side wall of the syringe 1, and the second piston 502 slides along the inner side wall of the cylinder body 501. One end of the second pull rod 503 is fixedly connected to the second piston 502, and the other end of the second pull rod 503 is fixedly connected to the second push plate 504. When using the device to take medicine, first pull the second push plate 504 and the second pull rod 503 outward to drive the second piston 502 to move, and reserve space for drug storage for the cylinder body 501. When using the device to mix the drug solution, open the first valve 4 and close the second valve 6, and alternately push and pull the first pull rod 104 and the second pull rod 503 to make the drug solution circulate and mix in the syringe 102 and the cylinder body 501.

[0028] The output end of the syringe 1 is provided with a second valve 6. When the syringe 1 is used to extract liquid medicine from a medicine bottle, the first valve 4 is closed and the second valve 6 is opened.

[0029] A fixing plate 7 is threadedly sleeved on one side of the syringe 1, so that the fixing plate 7 can be firmly connected to the syringe 1 and can be easily disassembled.

[0030] A guide rod 8 is slidably penetrated on the fixed plate 7, and the surface of the guide rod 8 is set to be a smooth surface, which is convenient for the guide rod 8 to slide through the fixed plate 7. Four guide rods 8 are set, and the four guide rods 8 are evenly distributed along the fixed plate 7. While providing stable guidance, the needle 101 of the syringe 1 can be kept from being exposed, reducing the possibility of the needle 101 accidentally injuring the human body. A movable plate 9 is fixedly welded to one end of the guide rod 8 for guiding the moving direction of the movable plate 9. A limiting plate 10 is fixedly welded to the other end of the guide rod 8. One side of the limiting plate 10 is in contact with the side wall of the fixed plate 7 to limit the sliding range of the guide rod 8. A spring 14 is fixedly welded between the fixed plate 7 and the movable plate 9 to provide elastic force between the fixed plate 7 and the movable plate 9. When the device is not in use, the movable plate 9 will automatically reset.

[0031] A first through hole 11 is provided on the surface of the movable plate 9, and the first through hole 11 is opposite to the output end of the syringe 1. A turntable 12 is rotatably connected to one side of the movable plate 9. The movable plate 9 is configured as a circular movable plate to facilitate the rotation of the turntable 12 on one side of the movable plate 9. A second through hole 13 is provided on the surface of the turntable 12, and the second through hole 13 is opposite to the first through hole 11. When the device is used, the second through hole 13 is used for the needle 101 of the syringe 1 to pass through.

[0032] An outer protrusion 901 is provided on the peripheral side of the movable plate 9, and an L-shaped block 121 is fixedly welded on one side of the turntable 12. The L-shaped block 121 slides along the outer protrusion 901 so that the turntable 12 will not separate from the movable plate 9 when the movable plate 9 rotates on one side.

[0033] The side wall of the movable plate 9 is provided with a blind hole 902, and the side wall of the rotating disk 12 is provided with a protrusion 122. When the drug injection device is not used, the protrusion 122 extends into the first through hole 11. When the device is used, the protrusion 122 extends into the blind hole 902 to temporarily fix the rotating disk 12 and the movable plate 9. There are two protrusions 122, and the two protrusions 122 are symmetrically distributed on both sides of the rotating disk 12. When the rotating disk 12 is rotated, the protrusion 122 on the outer side of the rotating disk 12 can be observed to understand the protrusion 122 on the inner side of the rotating disk 12. 2, a sleeve 131 is fixedly welded on one side of the second through hole 13. When the device is used, the turntable 12 is rotated to make the sleeve 131 extend into the first through hole 11, so that the turntable 12 and the movable plate 9 are kept fixed, and the needle 101 can extend through the first through hole 11 and the second through hole 13. When the device is not in use, the turntable 12 is rotated to make the sleeve 131 extend into the blind hole 902, and the first through hole 11 is blocked by the protrusion 122, so that the needle 101 cannot extend out.

[0034] The turntable 12 and the movable plate 9 are clearance-matched, so that the turntable 12 can be easily turned by hand while a space is reserved for the projection 122 and the sleeve 131 to move.

[0035] Specifically, the working principle of the nuclear medicine injection device is as follows: when in use, first pull the second push plate 504 and the second pull rod 503 of the medicine storage cartridge 5 outward to drive the second piston 502 of the medicine storage cartridge 5 to move, reserve a medicine storage space for the cylinder body 501 of the medicine storage cartridge 5, close the first valve 4 and open the second valve 6, and then manually rotate the turntable 12 to connect the first through hole 11 and the second through hole 13, and fit the outer side wall of the turntable 12 with the mouth of the medicine bottle containing the medicine liquid. Since the output end of the syringe 1 is opposite to the first through hole 11, after the syringe 1 is pushed by hand, the needle 101 of the syringe 1 will penetrate into the interior of the medicine bottle through the first through hole 11 and the second through hole 13, and then use the syringe 1 to extract the medicine liquid into the needle tube 102 of the syringe 1. After completion, the turntable 12 is separated from the mouth of the medicine bottle, and under the action of the spring 14, the movable plate 9 and the turntable 12 are reset, and the syringe 1 The needle 101 no longer extends out of the turntable 12, then the second valve 6 is closed and the first valve 4 is opened, the first push plate 105 of the syringe 1 is manually pushed, and then the first pull rod 104 of the syringe 1 pushes the first piston 103 to move, so that the liquid medicine in the needle tube 102 of the syringe 1 flows into the drug storage barrel 5 through the through hole 2 and the pipeline 3. After completion, the first valve 4 is closed, and the second valve 6 is opened again. The above steps are repeated to use the syringe 1 to extract other types of liquid medicine from other medicine bottles, and then the liquid medicine is injected into the drug storage barrel 5. Then, the first pull rod 104 of the syringe 1 and the second pull rod 503 of the drug storage barrel 5 are alternately pushed and pulled, so that the two types of liquid medicine circulate and mix between the needle tube 102 of the syringe 1 and the barrel 501 of the drug storage barrel 5; when the injection device is not in use, the turntable 12 is manually rotated to make the first through hole 11 and the second through hole 13 misaligned and not connected, and then the protrusion 122 on the inner side of the turntable 12 extends into the first through hole 11.

[0036] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nuclear medicine injection device, comprising a syringe (1), characterized in that: The side wall of the syringe (1) is provided with a through hole (2), one side of the through hole (2) is fixedly connected to a pipeline (3), the pipeline (3) is provided with a first valve (4), one end of the pipeline (3) is fixedly connected to a drug storage cartridge (5), the drug storage cartridge (5) is fixedly connected to the syringe (1), the output end of the syringe (1) is provided with a second valve (6), one end of the syringe (1) is threadedly sleeved with a fixed plate (7), the fixed plate (7) is slidably penetrated by a guide rod (8), one end of the guide rod (8) is fixedly connected to a movable plate (9), the other end of the guide rod (8) is fixedly connected to a limit plate (10), one side of the limit plate (10) is in contact with the fixed plate (7), a first through hole (11) is provided on the surface of the movable plate (9), the first through hole (11) is opposite to the output end of the syringe (1), the movable plate (9) is provided with a first through hole (11) ) is rotatably connected to one side of the syringe (1), the rotary disk (12) and the movable plate (9) are clearance-matched, a second through hole (13) is provided on the surface of the rotary disk (12), the second through hole (13) is opposite to the first through hole (11), and a spring (14) is fixedly welded between the fixed plate (7) and the movable plate (9); the drug storage cylinder (5) comprises a cylinder (501), a second piston (502), a second pull rod (503) and a second push plate (504), the cylinder (501) is configured as a transparent cylinder, the cylinder (501) is fixedly connected to the side wall of the syringe (1), the second piston (502) slides along the inner side wall of the cylinder (501), one end of the second pull rod (503) is fixedly connected to the second piston (502), and the other end of the second pull rod (503) is fixedly connected to the second push plate (504).

2. A nuclear medicine injection device as claimed in claim 1, characterized in that: The syringe (1) comprises a needle (101), a needle tube (102), a first piston (103), a first pull rod (104) and a first push plate (105); the needle (101) is threadedly connected to the output end of the needle tube (102); the first piston (103) slides along the inner side wall of the needle tube (102); one end of the first pull rod (104) is fixedly connected to the first piston (103); and the other end of the first pull rod (104) is fixedly connected to the first push plate (105).

3. A nuclear medicine injection device as claimed in claim 2, characterized in that: One end of the needle tube (102) is fixedly connected to a push block (106); a side wall of the push block (106) is arranged as a rough surface; two push blocks (106) are arranged, and the two push blocks (106) are symmetrical to each other.

4. A nuclear medicine injection device as claimed in claim 2, characterized in that: The surface of the needle tube (102) is provided with scale lines (107), and a plurality of scale lines (107) are provided, and the plurality of scale lines (107) are distributed at equal intervals.

5. A nuclear medicine injection device as claimed in claim 1, characterized in that: The surface of the guide rod (8) is configured as a smooth surface. Four guide rods (8) are provided, and the four guide rods (8) are evenly distributed along the fixing plate (7).

6. A nuclear medicine injection device as claimed in claim 1, characterized in that: The movable plate (9) is configured as a circular movable plate, an outer convex portion (901) is provided on the peripheral side surface of the movable plate (9), and a blind hole (902) is opened on one side of the movable plate (9).

7. A nuclear medicine injection device as claimed in claim 6, characterized in that: An L-shaped block (121) is fixedly welded to one side of the rotating disk (12), and the L-shaped block (121) slides along the outer protrusion (901).

8. A nuclear medicine injection device as claimed in claim 7, characterized in that: A convex block (122) is provided on the side wall of the rotating disk (12), and the convex block (122) cooperates with the blind hole (902).

9. A nuclear medicine injection device as claimed in claim 1, characterized in that: A sleeve (131) is fixedly welded to one side of the second through hole (13), and the sleeve (131) cooperates with the first through hole (11).

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